Lumber-calculator.



J. P.-STALOUP. LUMBER CALCULATOR. 41 1 01041100 111.00 .1411.11,101o.

990, 03, Patented Apr; 25, 1911. I Y

000 90 900 910 920 930 940 950 960 970 980 990 8000 80 800 810 820 850 840 B50 B60 870 880 890 7000 70 700 710 720 100 740 750 760 770 780 790 6000 60 600 610 620 630 640 650 660 670 660 690 10 5000 50 500 510 5201'53. 540 550 560 570 580 590 J 4000 40 400 410 420 430 440 450 460 470 480 490 4 ,1 1 12000 1200 1214 1200 1002 1010 1000 1044 1000 1012 1000 11200 00 1120 1104 1140 1102 1110 1190 1204 121a 120a 1240 0000 10 000 994 1000 1002 1000 1000 1004 1010 1002 1100 J 0400 00 040 004 000 002 000 210 024 900 002 900 14 1000 00 114 12a 142 100 104 012 020 ,000040 000 014-000 002 010 000 044 000 012 000 4200 00 420 404 440 402 410 400 004 010 002 040 L 2000 20 200 204 000 022 000 000 004 010 002 400 UNITED STATES PATENT OFFICE.

JAMES F. STALCUP, OF HOUSTON, TEXAS.

LUMBER-CALCULATOR.

Specification of Letters Patent.

Patented Apr. 25, 1911.

Application filed January 17, 1910. Serial No. 538,479.

To all whom it may concern: Be 1t known that I, JAMns F. STALCUP, a citizen of the United States, residing at Houston, in the county of Harris and State of Texas, have invented certain new and use" ful Improvements in Lumber-Galculators of which the following is a specification.

This invention relates to a method or means for indicating or calculating the amount of lumber in any given number of pieces of manufactured lumber, said pieces being of definite dimensions and lengths.

For a full understanding of the invention reference is to be had to the followin detail description and the a companying drawing, which represents a fragment of a device made in accordance with this invention.

In carrying out this invention it is contemplated that there will be provided as many charts as may be required to represent vmeasurements for all the ordinary forms of lumber, such for instance as lx ls, 2x ls, 2X6s, '1x6s, 1X8s, 2X8"s, and so on. The part indicated at A is one designed to be used with reference to lumber of the dimension 2X6s, and the same is divided into main blocks indicated at a, each of said blocks being designated by a numeral to indicate the length of the lumber appertaining thereto,

said indicating numerals being referred to by the letter 6. v

The primary object of this invention is to provide a means whereby at a glance the number of board feet in any given number of pieces of manufactured lumber or timber of known dimensions or length may be indicated without resorting to n'iathematical computation.

Each of the main blocks (4 includes a main group of numerals or cohinnns of numerals indicated at a, a plurality of vertical single columns at one side of the main grmm, and a horizontal series of numerals. The main group a of numerals is preferably separated from the vertical columns and the ln'n'izontal series of numbers by distinguishing character of line a and c, the same biing of some suitable color or in some other way made to guide "the eye readily of the observer. At the lower left hand corner bf the main group a and referably below the horizontal. indicator ine is a base numeral (Z. The base numeral represents the number of board feet in a piece of lumber of the length indicated by the indicating numeral Z) and of the dimension indicated at e at the top of the the main group or opposite the chart. One of the vertical'columns f is made up of key numbers to be used in guiding the eye of the observer to the result dcsired' Another of said vertical columns, indicated at g, re resents multiples of tens 'of the base numera. and at h is indicated the third verticalcolumn of numbers representing multiples of hundreds of the base numeral. Each main group a is made up of nine vertical columns, each of which is headedat the top by a unit digit a, and below the horizontal leader line 0 at the right of the base numeral d the numerals represent the number of board feet of the character of lumber indicated in as many pieces as are indicated by the unit digits a". Starting from the base number (l the number of board feet in a single piece may be considered as being directly beneath the unit digit 1 in set a, or upon the opposite side of the leader line a opposite the numeral 1 in the column of key numbers 7. The number of board feet in any number of tens indicated by the other numbers of the key number column 7 will be represented'by the corresponding numhere in column g. The combination of any number of tens with any number of units will be represented by the number found in proper number of tens in column I and directly beneath the proper unit digit in the number of board feet in sixty-seven pieces of 2X6s, 12 feet in length the observer would run his eye down the chart to the main block a indicated by the indicating number 12 and beginning at (30 in column f would glance thence to the right as far as the column in the main group a headed by the unit digit 7 where he would locate the number 804. The same process would be followed in determining the number of board feet in any other number of pieces of lumber of a certain size less than one hundred. F or a number of pieces greater than one hundred column h will be observed and to the number of board feet foundby the above method for to the right of the key number 60 as far as mam group a. For instance, if it be desired to determine the 882 in the main group a, which, by a simple mental process, added to 9800 gives 10,682, the requlrednumber.

The terms vertical, horizontal, right and left used above are to be understood as being merely relative, and that the arrangement mi ht be altered so as to read from left to right or and down as might be required by different individuals, Without departing from the spirit of the invention, and I do not desire to be limited to the exact form or arrangement of the device hereinbefore set forth.

I claim A lumber calculating chart as described having dimension indicia atits top denoting the sectional area of pieces of lumber the board feet in which are to be computed, and said chart embodying a plurality of blocks or groupsof figures, each group of figures being associated with a numeral indicative of the. linear feet of boards for which said group affords a computation, and including a series of base numerals denoting the number of board feet in one or more pieces of lumber of the size prescribed by the dimension indicia, and each group embodying a vertical column of key numerals representin the numbers of pieces of lumber in tens, a orizontal column of numerals representing numbers of pieces of lumber in units, and other numerals in each group constituting multiples of the tens and unit numerals aforesaid and the numerals indicating'the linear feet and associated with each group of figures, the two last mentioned sets of numerals being located at one side of the key numerals, and a final set of numerals arranged on the opposite side of the key numerals and representing multiples of hundreds of the base numeral.

In testimony whereof I aflix my signature in presence of two witnesses.

JAMES F. s'rALcUP.

\Vitnesses:

F. B. Dwrnn, T. J. lVICIlONALD, 

